Surveyor&#39;s instrument.



H. G. SCHULTZ.

SURVEYORS INSTRUMENT.

APPLICATION FILED mm. s, 1901.

H U/Q VEy Patented Nov. 3, 1908.

UNITED STATE Q PATENT OFFICE.

HENRY C. SCHULTZ, OF SYRACUSE, NEW YORK.

SUBVEYORS INSTRUMENT.

Application filed March 8, 1907.

To all whom "it may. concern:

Be it known that I, HENRY C. citizen of the Empire of Germany, and T881 dent of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Surveyors Instruments, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact descrip- The object of this invention is to provide a transit instrument which shall have its vertical axis or spindle and its standards absolutely permanently and rigidly united with the vernier-plate and thus obviate the liabil ity of said parts becoming disturbed from their requisite relative positions and consequently dispense with readjustment thereof during the use of the instrument, and also obviate the liability of warping the vernierplate incident to the usual manner of attaching thereto the standards formed of separate castings as has heretofore been the practice in the manufacture of such instruments. The said object of my invention I attain by a novel construction of a frame cast in one piece of suitable metal designed to form the main parts of the transit instru- SCHULTZ, a

meat in the process of manufacturing the same. Said frame being adapted to be operated on to finish the surfaces thereof so as to impart to it the desired neat exterior appearance and provide it with proper bearings for the horizontal axis of the telescope and for the attachment of the compass ring, verniers, clampingand tangent-screws and the various other requirements of a complete instrument.

In the accompanying is a perspective View of embodying my invention,

drawings Figure 1 a cast metal frame and Fig. 2 is a ver- Specification of Letters Patent.

Patented Nov. 3, 1908.

Serial No. 361,229.

tical transverse section on the line -X-X- in Fig. 1.

The said frame is cast in one piece of suitable metal and is thus rendered jointless and capable of permanently retaining its component parts in their required relative positions and it consists of the horizontal annular plate a, the spindle -b projecting from the center of the underside of the plate a-, and the standards -c- 0 projecting from the top of said plate, all of said parts are thus permanently and rigidly united and maintained in their relative positions as aforesaid.

By means of proper tools and machines the aforesaid parts are subsequently treated and finished to impart to them the desired neat exterior appearance and the required bearings on the standards -ccfor the horizontal axis of the telescope, and the seats for the attachment of the compass, the clamping-screw, tangent-screws, and the various other requirements of a complete instrument.

The aforesaid frame is composed of a species of metal which does not attract the needle of the compass.

What I claim as my invention is In a surveyors instrument the Within described jointless frame consisting of a horizontal annular plate, standards rising from the top of said plate and the spindle projecting from the underside of said plate, all cast in one piece of metal to permanently retain said parts in their requisite relative positions.

HENRY C. SCHULTZ.

Witnesses J. J. LAASS, G. KAISER. 

